:root {
  color-scheme: dark;
  --bg: #08080a;
  --panel: #0e0e12;
  --panel-2: #131319;
  --text: #f5f5f7;
  --body-text: #b6b6c0;
  --muted: #8a8a95;
  --muted2: #62626d;
  --border: rgba(255,255,255,0.09);
  --border-strong: rgba(255,255,255,0.16);
  --accent: #7c8cff;
  --accent-text: #ffffff;
  --danger: #ff6b6b;
  --ok: #54d186;
  --surface: #131319;
  --sans: 'Inter', ui-sans-serif, system-ui, -apple-system, Helvetica, Arial, sans-serif;
  --mono: 'SFMono-Regular', ui-monospace, Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(900px 520px at 50% -160px, rgba(124,140,255,0.14), transparent 70%),
    radial-gradient(700px 440px at 90% -60px, rgba(176,120,255,0.09), transparent 65%);
}

a { color: inherit; }

.wrap { max-width: 920px; margin: 0 auto; padding: 0 20px; }

/* ── Header ── */
header.site {
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
  background: rgba(8,8,10,0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
header.site .wrap {
  display: flex; align-items: center; gap: 20px;
  height: 56px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; letter-spacing: -0.01em;
  font-size: 16px; color: var(--text); text-decoration: none;
}
.brand-mark {
  width: 18px; height: 18px; border-radius: 5px; flex: none;
  background: linear-gradient(135deg, #9aa6ff, #6f7bff);
  box-shadow: 0 0 14px rgba(124,140,255,0.45);
}
.brand-tag {
  font-family: var(--mono); font-size: 10.5px; font-weight: 500;
  letter-spacing: 0.12em; color: var(--muted);
  border: 1px solid var(--border); border-radius: 999px; padding: 3px 9px;
}
header.site nav { margin-left: auto; display: flex; align-items: center; gap: 18px; }
header.site nav a { color: var(--muted); text-decoration: none; font-size: 14.5px; font-weight: 500; transition: color .15s; }
header.site nav a:hover { color: var(--text); }
header.site nav a[target="_blank"]::after { content: "↗"; display: inline-block; margin-left: 3px; font-size: 0.82em; opacity: 0.6; }
.userbox { display: flex; align-items: center; gap: 12px; font-size: 13.5px; color: var(--muted); }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid var(--border-strong); background: rgba(255,255,255,0.03); color: var(--text);
  padding: 10px 18px; border-radius: 999px; font: inherit; font-size: 14px; font-weight: 600;
  cursor: pointer; text-decoration: none; transition: background .15s, border-color .15s, transform .15s;
}
.btn:hover { background: rgba(255,255,255,0.07); border-color: rgba(255,255,255,0.32); transform: translateY(-1px); }
.btn.primary { background: #fff; color: #000; border-color: #fff; }
.btn.primary:hover { background: #e2e2e6; border-color: #e2e2e6; }
.btn.danger { color: var(--danger); border-color: rgba(255,107,107,0.4); background: transparent; }
.btn.danger:hover { background: rgba(255,107,107,0.08); border-color: rgba(255,107,107,0.6); }
.btn.small { padding: 6px 14px; font-size: 13px; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }

/* ── Login ── */
.center { min-height: calc(100vh - 60px); display: grid; place-items: center; padding: 40px 20px; }
.card {
  width: 100%; max-width: 420px; border: 1px solid var(--border);
  border-radius: 16px; padding: 32px; background: var(--panel);
  box-shadow: 0 20px 60px -30px rgba(0,0,0,0.8);
}
.card h1 { font-size: 24px; letter-spacing: -0.02em; margin-bottom: 6px; }
.card p.sub { color: var(--muted); font-size: 14px; margin-bottom: 24px; }
.divider { display: flex; align-items: center; gap: 12px; color: var(--muted2); font-size: 12px; margin: 20px 0; text-transform: uppercase; letter-spacing: 0.08em; }
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--border); }
label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--body-text); }
input[type=email], input[type=text], textarea, select {
  width: 100%; border: 1px solid var(--border-strong); border-radius: 10px; padding: 11px 13px;
  font: inherit; font-size: 14px; background: var(--panel-2); color: var(--text);
  transition: border-color .15s, box-shadow .15s;
}
input[type=email]:focus, input[type=text]:focus, textarea:focus, select:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(124,140,255,0.18);
}
input::placeholder, textarea::placeholder { color: var(--muted2); }
textarea { min-height: 160px; resize: vertical; font-family: var(--mono); font-size: 13px; }
.field { margin-bottom: 16px; }
.full { width: 100%; }
.msg { font-size: 13px; margin-top: 12px; min-height: 18px; }
.msg.err { color: var(--danger); }
.msg.ok { color: var(--ok); }

/* ── Docs list ── */
main { padding: 36px 0 80px; }
.page-title { font-size: 28px; letter-spacing: -0.02em; margin-bottom: 4px; }
.page-sub { color: var(--muted); margin-bottom: 28px; }
.doc-list { display: grid; gap: 10px; }
.doc {
  border: 1px solid var(--border); border-radius: 14px; padding: 16px 18px;
  display: flex; align-items: center; gap: 14px; cursor: pointer; background: var(--panel);
  transition: border-color .15s, background .15s, transform .15s;
}
.doc:hover { border-color: var(--border-strong); background: var(--panel-2); transform: translateY(-1px); }
.doc .ico { font-size: 18px; width: 24px; text-align: center; }
.doc .meta { flex: 1; min-width: 0; }
.doc .meta .t { font-weight: 600; color: var(--text); }
.doc .meta .d { font-size: 13px; color: var(--muted); }
.tag { font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: .08em;
       font-family: var(--mono); color: var(--muted); border: 1px solid var(--border); border-radius: 999px; padding: 3px 10px; }
.empty, .loading { color: var(--muted); padding: 40px 0; text-align: center; }

/* ── Doc viewer ── */
.viewer { display: none; }
.viewer.active { display: block; }
.viewer .back { margin-bottom: 18px; }
.prose { max-width: 720px; }
.prose h1, .prose h2, .prose h3 { letter-spacing: -0.01em; margin: 1.4em 0 .5em; color: var(--text); }
.prose h1 { font-size: 28px; } .prose h2 { font-size: 22px; } .prose h3 { font-size: 18px; }
.prose p, .prose ul, .prose ol { margin: .7em 0; color: var(--body-text); }
.prose pre { background: #0c0c10; border: 1px solid var(--border); border-radius: 10px; padding: 14px; overflow: auto; }
.prose code { font-family: var(--mono); font-size: 90%; }
.prose img { max-width: 100%; border-radius: 10px; border: 1px solid var(--border); }
.prose a { color: #fff; text-decoration: none; border-bottom: 1px solid var(--border-strong); padding-bottom: 1px; }
.prose a:hover { border-color: transparent; }

/* ── Admin ── */
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.section { border: 1px solid var(--border); border-radius: 14px; padding: 22px; margin-bottom: 22px; background: var(--panel); }
.section h2 { font-size: 16px; margin-bottom: 14px; }
.row { display: flex; gap: 10px; align-items: flex-end; }
.row .field { flex: 1; margin-bottom: 0; }
.list-item { display: flex; align-items: center; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.list-item:last-child { border-bottom: none; }
.list-item .grow { flex: 1; min-width: 0; }
.pill { font-size: 12px; color: var(--muted); }
@media (max-width: 720px) { .grid2 { grid-template-columns: 1fr; } }

.hidden { display: none !important; }

/* ── Theme toggle + light theme ── */
.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; padding: 0; border-radius: 999px;
  border: 1px solid var(--border-strong); background: transparent; color: var(--muted);
  cursor: pointer; transition: color .15s, border-color .15s, background .15s;
}
.theme-toggle:hover { color: var(--text); border-color: rgba(127,127,140,.5); background: rgba(127,127,140,.08); }
.theme-toggle svg { width: 16px; height: 16px; display: block; }
.theme-toggle .icon-moon { display: none; }

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #ffffff; --panel: #fafafa; --panel-2: #f3f3f5;
  --text: #0c0c0f; --body-text: #3a3a42; --muted: #6b6b75; --muted2: #9a9aa3;
  --border: rgba(0,0,0,0.10); --border-strong: rgba(0,0,0,0.18);
  --accent: #5b6cff; --accent-text: #ffffff; --danger: #c0362c; --ok: #2f7a34; --surface: #f3f3f5;
}
:root[data-theme="light"] header.site { background: rgba(255,255,255,0.78); }
:root[data-theme="light"] body::before {
  background:
    radial-gradient(900px 520px at 50% -160px, rgba(91,108,255,0.10), transparent 70%),
    radial-gradient(700px 440px at 90% -60px, rgba(150,110,255,0.07), transparent 65%);
}
:root[data-theme="light"] .btn { background: rgba(0,0,0,0.02); }
:root[data-theme="light"] .btn:hover { background: rgba(0,0,0,0.05); border-color: rgba(0,0,0,0.3); }
:root[data-theme="light"] .btn.primary { background: #0f0f12; color: #fff; border-color: #0f0f12; }
:root[data-theme="light"] .btn.primary:hover { background: #26262c; border-color: #26262c; }
:root[data-theme="light"] .prose a { color: #0c0c0f; }
:root[data-theme="light"] .prose pre { background: #f5f5f7; }
:root[data-theme="light"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="light"] .theme-toggle .icon-moon { display: block; }